Seven RF Amplifier Characteristics You Need To Understand

An RF amplifier is an important piece of equipment for many communication systems. If you need to pick out an RF amplifier for your system, there are numerous RF amplifier characteristics you need to understand to find the best piece of equipment for your needs.

The following are seven RF amplifier characteristics you need to understand. 

The amplifier gain

The amplifier gain is generally considered one of the most important considerations to look into in selecting an RF amplifier.

The gain refers to an amplifier's ability to boost a signal according to the input terminal. One important aspect of gain that you need to understand before selecting an RF amplifier is that gain will vary according to frequency. Higher frequencies usually mean reduced gain. 

The impedance

The impedance of an RF amplifier is an important issue to look into if a communications system involves antenna equipment and network transmitting.

Choosing an RF amplifier with the wrong impedance for your needs could lead to a situation where your communication system experiences problems like reflection or various types of damage to system components. 

The bandwidth

The bandwidth of an RF amplifier refers to any range that exists in the frequency. It is a curve that indicates the gain response as the amplifier is giving off gain. 

The flatness

The flatness of an RF amplifier is related to the amplifier's bandwidth. Flatness refers to how the amplifier responds through its gain across all the bandwidth specifications at which the amplifier is capable of operating. 

The noise figure

It's important to be aware of the noise figure of an RF amplifier before you select it for your system. The noise figure is a key indicator of how well an amplifier performs. This figure is given as a ratio of the input signal to the output signal.

A lower noise figure is an indication of an amplifier with stronger performance. 

The input and output power

Your RF amplifier could become damaged if you go over the maximum allowable input power. You also need to choose an RF amplifier model that has a significant output power to support the bandwidth and flatness requirements of your system. 

The power consumption

You need to be able to provide your RF amplifier with adequate power so that it functions optimally. Certain RF amplifier models will have high AC power supply requirements that you will have to keep up with so that your communication system continues to operate properly.